Do you know that the human body is in fact a very complicated piece of technical engineering? I think it can serve as an example for many technical projects. Take cartilage, it would be great if this could be imitated and used on for instance boats. Or the way our body repairs wounds, isn't that fantastic? Just imagine that you could have a car that repairs itself after a crash! Never rusting metal anymore, it would just become as new, all automatically! I hope they'll be able to make this some day in the future.